<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <style>
        .box1{
            width: 100px;
            height: 100px;
            background-color: aquamarine;
            border-radius: 15px;
            text-align: center;
        }
        .box2{
            width: 100px;
            height: 100px;
            background-color: aquamarine;
            border-radius: 100%;
            margin: 5px;
            text-align: center;
            
        }
        .box3{
            width: 100px;
            height: 100px;
            background-color: aquamarine;
            border-radius: 45px 6px;
            margin: 5px;
        }
        .box4{
            width: 100px;
            height: 100px;
            background-color: aquamarine;
            border-radius: 18px 36px 5px;
            margin: 5px;
        }

        .box5{
            width: 100px;
            height: 100px;
            background-color: aquamarine;
            border-radius: 18px 36px 5px  22px;
            margin: 5px;
        }
    </style>
</head>
<body>

    <ul>
        <li>1各值  四个角的圆角</li>
        <li>2各值  1 左上  右下  2 右上 左下  </li>
        <li>3各值  第一个左上  第二个右上左下  第三个右下</li>
        <li>4各值  顺时针  左上 右上 右下 左下</li>
    </ul>
    <div class="box1">
        <p>1个值</p>
    </div>
    <div class="box2">
        <p style="list-style:inside;">1个值 圆形</p>
    </div>
    <div class="box3">
        <p>2个值</p>
    </div>
    <div class="box4">
        <p>3个值  </p>
    </div>

    <div class="box5">
        <p>4个值  </p>
    </div>
</body>
</html>